Results 101 to 110 of about 2,213,482 (351)

Evaluation of Some Proposed Methods for Protecting Bridge Substructure Using Physical Models [PDF]

, 2003
Bridges constructed across streams with erodable beds are normally subjected to serious scouring during the flood at piers and abutment sites. As a result, scour holes will be formed at the bridge substructure.
Ghazali, Abdul Halim, Jafaar, Mohd Saleh, Megat Mohd Noor, Megat Johari, Mohammed, Thamer Ahmed, Salem, Mohammed, Thanoon, Waleed Abdulmalik, Yusuf, Badronnisa   +6 more
core  

Fire buffers drought impacts on reproduction in a resprouting Mediterranean shrub

Oikos, EarlyView.
Fire and drought increasingly co‐occur, exposing plants to greater drought stress during post‐fire resprouting. Yet, the effect of this combination of disturbances on plant fitness remains poorly understood. Here, we examine how post‐fire resprouting influences reproductive success under drought conditions in the Mediterranean shrub Anthyllis ...
Jaime Saiz‐ Blanco, Conchita Alonso, Juli G. Pausas   +2 more
wiley   +1 more source

Simultaneous Effect of Collar and Roughness on Reducing and Controlling the Local Scour around Bridge Abutment

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2017
Investigation of local scour around hydraulic structures particularly bridges is of crucial importance in river engineering. Bridge destruction mostly occurs as a result of scour phenomenon around piers and abutments, not because of structural weaknesses.
Hamed Shahsavari, Manouchehr Heidarpour, Mohammad Mohammadalizadeh   +2 more
doaj   +1 more source

Flow hydrodynamics across open channel flows with riparian zones: implications for riverbank stability [PDF]

, 2017
Riverbank vegetation is of high importance both for preserving the form (morphology) and function (ecology) of natural river systems. Revegetation of riverbanks is commonly used as a means of stream rehabilitation and management of bank instability and ...
Liu, Da, Valyrakis, Manousos, Williams, Richard   +2 more
core   +2 more sources

Catchment conversion to agriculture alters freshwater macroinvertebrate community responses to flow disturbance: results from a replicated in‐stream experiment

Oikos, EarlyView.
Anthropogenic stressors often co‐occur in ecosystems, but their combined impacts are rarely assessed using field experiments. Press disturbances particularly can reshape community dynamics, altering their capacity to withstand or recover from acute pulse disturbances by modifying response diversity.
Bridget E. White, Anne Watson, Sean T. Atkinson, Belinda J. Robson, Russell G. Death, Mark J. Hovenden, Leon A. Barmuta   +6 more
wiley   +1 more source

Experimental study on toe scouring at sloping walls with gravel foreshores [PDF]

, 2019
Sea defences, such as urban seawalls can fail due to the development of a scour hole at the toe of the structure. The scour depth or the information on ground levels at the structure toe is required for the sustainable management of coastal defences, due
Pearson, Jonathan M., Salauddin, M.
core   +1 more source

Unveiling human–wildlife interactions in the context of livestock grazing abandonment and the return of large carnivores, ungulates and vultures: A stakeholder perspective

People and Nature, EarlyView.
Abstract Pastoral practices remain a widespread economic activity across European mountain regions. However, the viability of this activity may be threatened by the recovery of large wild vertebrates associated with passive rewilding, leading to the so‐called human–wildlife conflicts.
P. Acebes, F. J. Muñoz‐Gálvez, Z. Iglesias‐González, M. García‐Llorente, D. López‐García   +4 more
wiley   +1 more source

Temporal variation of scour depth around bridge abutment in presence and absence of permeable spur dike under unsteady flow conditions

Ain Shams Engineering Journal
The position and depth of a scour hole around a bridge abutment are the important design parameters. The existing models have been mostly developed for steady flows, whereas real-life abutments often fail due to intrinsically unsteady flood streams. This
Maryam Khajavi, Seyed Mahmood Kashefipour, Mahmood Shafai Bejestan   +2 more
doaj   +1 more source

Use of high resolution sonar for near-turbine fish observations (DIDSON) - We@Sea 2007-002 [PDF]

, 2010
In this study we investigate small scale distribution of pelagic fish within a windfarm by means of a high resolution sonar (DIDSON, Dual frequency IDentification SONar; Soundmetrics).
Burggraaf, D., Couperus, A.S., Keeken, O.A., van, Kooten, T., van, Tribuhl, S.V., Winter, H.V.   +5 more
core   +1 more source

Backwater controls of avulsion location on deltas [PDF]

, 2012
River delta complexes are built in part through repeated river-channel avulsions, which often occur about a persistent spatial node creating delta lobes that form a fan-like morphology. Predicting the location of avulsions is poorly understood, but it is
Chatanantavet, Phairot, Lamb, Michael P., Nittrouer, Jeffrey A.   +2 more
core   +2 more sources